/* C/ObjC/C++ command line option handling.
- Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc.
+ Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007
+ Free Software Foundation, Inc.
Contributed by Neil Booth.
This file is part of GCC.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING. If not, write to the Free
-Software Foundation, 59 Temple Place - Suite 330, Boston, MA
-02111-1307, USA. */
+Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301, USA. */
#include "config.h"
#include "system.h"
/* If -v seen. */
static bool verbose;
+/* If -lang-fortran seen. */
+static bool lang_fortran = false;
+
/* Dependency output file. */
static const char *deps_file;
/* The prefix given by -iprefix, if any. */
static const char *iprefix;
+/* The multilib directory given by -imultilib, if any. */
+static const char *imultilib;
+
/* The system root, if any. Overridden by -isysroot. */
static const char *sysroot = TARGET_SYSTEM_ROOT;
/* Number of deferred options scanned for -include. */
static size_t include_cursor;
-/* Permit Fortran front-end options. */
-static bool permit_fortran_options;
-
static void set_Wimplicit (int);
static void handle_OPT_d (const char *);
static void set_std_cxx98 (int);
+static void set_std_cxx0x (int);
static void set_std_c89 (int, int);
static void set_std_c99 (int);
static void check_deps_environment_vars (void);
return false;
case OPT_fconstant_string_class_:
- error ("no class name specified with \"%s\"", opt);
+ error ("no class name specified with %qs", opt);
break;
case OPT_A:
- error ("assertion missing after \"%s\"", opt);
+ error ("assertion missing after %qs", opt);
break;
case OPT_D:
case OPT_U:
- error ("macro name missing after \"%s\"", opt);
+ error ("macro name missing after %qs", opt);
break;
case OPT_F:
case OPT_isysroot:
case OPT_isystem:
case OPT_iquote:
- error ("missing path after \"%s\"", opt);
+ error ("missing path after %qs", opt);
break;
case OPT_MF:
case OPT_include:
case OPT_imacros:
case OPT_o:
- error ("missing filename after \"%s\"", opt);
+ error ("missing filename after %qs", opt);
break;
case OPT_MQ:
case OPT_MT:
- error ("missing makefile target after \"%s\"", opt);
+ error ("missing makefile target after %qs", opt);
break;
}
/* Common initialization before parsing options. */
unsigned int
-c_common_init_options (unsigned int argc, const char ** ARG_UNUSED (argv))
+c_common_init_options (unsigned int argc, const char **argv)
{
static const unsigned int lang_flags[] = {CL_C, CL_ObjC, CL_CXX, CL_ObjCXX};
- unsigned int result;
+ unsigned int i, result;
/* This is conditionalized only because that is the way the front
ends used to do it. Maybe this should be unconditional? */
before passing on command-line options to cpplib. */
cpp_opts->warn_dollars = 0;
- flag_const_strings = c_dialect_cxx ();
flag_exceptions = c_dialect_cxx ();
warn_pointer_arith = c_dialect_cxx ();
+ warn_write_strings = c_dialect_cxx();
deferred_opts = XNEWVEC (struct deferred_opt, argc);
result = lang_flags[c_language];
- /* If potentially preprocessing Fortran we have to accept its front
- end options since the driver passes most of them through. */
-#ifdef CL_F77
- if (c_language == clk_c && argc > 2
- && !strcmp (argv[2], "-traditional-cpp" ))
+ if (c_language == clk_c)
{
- permit_fortran_options = true;
- result |= CL_F77;
- }
+ /* If preprocessing assembly language, accept any of the C-family
+ front end options since the driver may pass them through. */
+ for (i = 1; i < argc; i++)
+ if (! strcmp (argv[i], "-lang-asm"))
+ {
+ result |= CL_C | CL_ObjC | CL_CXX | CL_ObjCXX;
+ break;
+ }
+
+#ifdef CL_Fortran
+ for (i = 1; i < argc; i++)
+ if (! strcmp (argv[i], "-lang-fortran"))
+ {
+ result |= CL_Fortran;
+ break;
+ }
#endif
+ }
return result;
}
enum opt_code code = (enum opt_code) scode;
int result = 1;
+ /* Prevent resetting the language standard to a C dialect when the driver
+ has already determined that we're looking at assembler input. */
+ bool preprocessing_asm_p = (cpp_get_options (parse_in)->lang == CLK_ASM);
+
switch (code)
{
default:
if (cl_options[code].flags & (CL_C | CL_CXX | CL_ObjC | CL_ObjCXX))
break;
- result = permit_fortran_options;
+#ifdef CL_Fortran
+ if (lang_fortran && (cl_options[code].flags & (CL_Fortran)))
+ break;
+#endif
+ result = 0;
break;
case OPT__output_pch_:
warn_sign_compare = value;
warn_switch = value;
warn_strict_aliasing = value;
+ warn_strict_overflow = value;
+ warn_string_literal_comparison = value;
+ warn_always_true = value;
+ warn_array_bounds = value;
/* Only warn about unknown pragmas that are not in system
headers. */
else
{
/* C++-specific warnings. */
- warn_nonvdtor = value;
warn_reorder = value;
warn_nontemplate_friend = value;
+ warn_cxx0x_compat = value;
+ if (value > 0)
+ warn_write_strings = true;
}
cpp_opts->warn_trigraphs = value;
cpp_opts->warn_comments = value;
cpp_opts->warn_num_sign_change = value;
cpp_opts->warn_multichar = value; /* Was C++ only. */
+
+ if (warn_pointer_sign == -1)
+ warn_pointer_sign = 1;
break;
case OPT_Wcomment:
cpp_opts->warn_deprecated = value;
break;
- case OPT_Wdiv_by_zero:
- warn_div_by_zero = value;
- break;
-
case OPT_Wendif_labels:
cpp_opts->warn_endif_labels = value;
break;
case OPT_Werror:
cpp_opts->warnings_are_errors = value;
+ global_dc->warning_as_error_requested = value;
break;
- case OPT_Werror_implicit_function_declaration:
- mesg_implicit_function_declaration = 2;
+ case OPT_Werror_implicit_function_declaration:
+ /* For backward compatibility, this is the same as
+ -Werror=implicit-function-declaration. */
+ enable_warning_as_error ("implicit-function-declaration", value, CL_C | CL_ObjC);
break;
case OPT_Wformat:
cpp_opts->warn_multichar = value;
break;
+ case OPT_Wnormalized_:
+ if (!value || (arg && strcasecmp (arg, "none") == 0))
+ cpp_opts->warn_normalize = normalized_none;
+ else if (!arg || strcasecmp (arg, "nfkc") == 0)
+ cpp_opts->warn_normalize = normalized_KC;
+ else if (strcasecmp (arg, "id") == 0)
+ cpp_opts->warn_normalize = normalized_identifier_C;
+ else if (strcasecmp (arg, "nfc") == 0)
+ cpp_opts->warn_normalize = normalized_C;
+ else
+ error ("argument %qs to %<-Wnormalized%> not recognized", arg);
+ break;
+
case OPT_Wreturn_type:
warn_return_type = value;
break;
+ case OPT_Wstrict_null_sentinel:
+ warn_strict_null_sentinel = value;
+ break;
+
case OPT_Wsystem_headers:
cpp_opts->warn_system_headers = value;
break;
break;
case OPT_Wwrite_strings:
- if (!c_dialect_cxx ())
- flag_const_strings = value;
- else
- warn_write_strings = value;
+ warn_write_strings = value;
+ break;
+
+ case OPT_Weffc__:
+ warn_ecpp = value;
+ if (value)
+ warn_nonvdtor = true;
break;
case OPT_ansi:
case OPT_fvtable_thunks:
case OPT_fxref:
case OPT_fvtable_gc:
- warning ("switch \"%s\" is no longer supported", option->opt_text);
+ warning (0, "switch %qs is no longer supported", option->opt_text);
break;
case OPT_faccess_control:
case OPT_fsigned_bitfields:
flag_signed_bitfields = value;
- explicit_flag_signed_bitfields = 1;
break;
case OPT_fsigned_char:
case OPT_funsigned_bitfields:
flag_signed_bitfields = !value;
- explicit_flag_signed_bitfields = 1;
break;
case OPT_funsigned_char:
flag_conserve_space = value;
break;
- case OPT_fconst_strings:
- flag_const_strings = value;
- break;
-
case OPT_fconstant_string_class_:
constant_string_class_name = arg;
break;
flag_enforce_eh_specs = value;
break;
- case OPT_ffixed_form:
- case OPT_ffixed_line_length_:
- /* Fortran front end options ignored when preprocessing only. */
- if (!flag_preprocess_only)
- result = 0;
+ case OPT_fextended_identifiers:
+ cpp_opts->extended_identifiers = value;
break;
case OPT_ffor_scope:
break;
case OPT_fhandle_exceptions:
- warning ("-fhandle-exceptions has been renamed -fexceptions (and is now on by default)");
+ warning (0, "-fhandle-exceptions has been renamed -fexceptions (and is now on by default)");
flag_exceptions = value;
break;
flag_implicit_templates = value;
break;
+ case OPT_flax_vector_conversions:
+ flag_lax_vector_conversions = value;
+ break;
+
case OPT_fms_extensions:
flag_ms_extensions = value;
break;
flag_no_nonansi_builtin = !value;
break;
- case OPT_fobjc_exceptions:
- flag_objc_exceptions = value;
- break;
-
- case OPT_fobjc_sjlj_exceptions:
- flag_objc_sjlj_exceptions = value;
- break;
-
case OPT_foperator_names:
cpp_opts->operator_names = value;
break;
case OPT_freplace_objc_classes:
flag_replace_objc_classes = value;
break;
-
+
case OPT_frepo:
flag_use_repository = value;
if (value)
case OPT_fuse_cxa_atexit:
flag_use_cxa_atexit = value;
break;
-
+
+ case OPT_fuse_cxa_get_exception_ptr:
+ flag_use_cxa_get_exception_ptr = value;
+ break;
+
case OPT_fvisibility_inlines_hidden:
visibility_options.inlines_hidden = value;
break;
defer_opt (code, arg);
break;
+ case OPT_imultilib:
+ imultilib = arg;
+ break;
+
case OPT_iprefix:
iprefix = arg;
break;
cpp_opts->dollars_in_ident = false;
break;
+ case OPT_lang_fortran:
+ lang_fortran = true;
+ break;
+
case OPT_lang_objc:
cpp_opts->objc = 1;
break;
case OPT_pedantic:
cpp_opts->pedantic = 1;
cpp_opts->warn_endif_labels = 1;
+ if (warn_pointer_sign == -1)
+ warn_pointer_sign = 1;
+ if (warn_overlength_strings == -1)
+ warn_overlength_strings = 1;
break;
case OPT_print_objc_runtime_info:
print_struct_values = 1;
break;
+ case OPT_print_pch_checksum:
+ c_common_print_pch_checksum (stdout);
+ exit_after_options = true;
+ break;
+
case OPT_remap:
cpp_opts->remap = 1;
break;
case OPT_std_c__98:
case OPT_std_gnu__98:
- set_std_cxx98 (code == OPT_std_c__98 /* ISO */);
+ if (!preprocessing_asm_p)
+ set_std_cxx98 (code == OPT_std_c__98 /* ISO */);
+ break;
+
+ case OPT_std_c__0x:
+ case OPT_std_gnu__0x:
+ if (!preprocessing_asm_p)
+ set_std_cxx0x (code == OPT_std_c__0x /* ISO */);
break;
case OPT_std_c89:
case OPT_std_iso9899_1990:
case OPT_std_iso9899_199409:
- set_std_c89 (code == OPT_std_iso9899_199409 /* c94 */, true /* ISO */);
+ if (!preprocessing_asm_p)
+ set_std_c89 (code == OPT_std_iso9899_199409 /* c94 */, true /* ISO */);
break;
case OPT_std_gnu89:
- set_std_c89 (false /* c94 */, false /* ISO */);
+ if (!preprocessing_asm_p)
+ set_std_c89 (false /* c94 */, false /* ISO */);
break;
case OPT_std_c99:
case OPT_std_c9x:
case OPT_std_iso9899_1999:
case OPT_std_iso9899_199x:
- set_std_c99 (true /* ISO */);
+ if (!preprocessing_asm_p)
+ set_std_c99 (true /* ISO */);
break;
case OPT_std_gnu99:
case OPT_std_gnu9x:
- set_std_c99 (false /* ISO */);
+ if (!preprocessing_asm_p)
+ set_std_c99 (false /* ISO */);
break;
case OPT_trigraphs:
sanitize_cpp_opts ();
- register_include_chains (parse_in, sysroot, iprefix,
+ register_include_chains (parse_in, sysroot, iprefix, imultilib,
std_inc, std_cxx_inc && c_dialect_cxx (), verbose);
+#ifdef C_COMMON_OVERRIDE_OPTIONS
+ /* Some machines may reject certain combinations of C
+ language-specific options. */
+ C_COMMON_OVERRIDE_OPTIONS;
+#endif
+
flag_inline_trees = 1;
/* Use tree inlining. */
if (!flag_no_inline)
flag_no_inline = 1;
if (flag_inline_functions)
- {
- flag_inline_trees = 2;
- flag_inline_functions = 0;
- }
+ flag_inline_trees = 2;
/* If we are given more than one input file, we must use
unit-at-a-time mode. */
if (flag_objc_exceptions && !flag_objc_sjlj_exceptions)
flag_exceptions = 1;
- /* -Wextra implies -Wsign-compare and -Wmissing-field-initializers,
+ /* -Wextra implies -Wclobbered, -Wempty-body, -Wsign-compare,
+ -Wmissing-field-initializers, -Wmissing-parameter-type
+ -Wold-style-declaration, and -Woverride-init,
but not if explicitly overridden. */
+ if (warn_clobbered == -1)
+ warn_clobbered = extra_warnings;
+ if (warn_empty_body == -1)
+ warn_empty_body = extra_warnings;
if (warn_sign_compare == -1)
warn_sign_compare = extra_warnings;
if (warn_missing_field_initializers == -1)
warn_missing_field_initializers = extra_warnings;
+ if (warn_missing_parameter_type == -1)
+ warn_missing_parameter_type = extra_warnings;
+ if (warn_old_style_declaration == -1)
+ warn_old_style_declaration = extra_warnings;
+ if (warn_override_init == -1)
+ warn_override_init = extra_warnings;
+
+ /* -Wpointer_sign is disabled by default, but it is enabled if any
+ of -Wall or -pedantic are given. */
+ if (warn_pointer_sign == -1)
+ warn_pointer_sign = 0;
+
+ /* -Woverlength-strings is off by default, but is enabled by -pedantic.
+ It is never enabled in C++, as the minimum limit is not normative
+ in that standard. */
+ if (warn_overlength_strings == -1 || c_dialect_cxx ())
+ warn_overlength_strings = 0;
/* Special format checking options don't work without -Wformat; warn if
they are used. */
- if (warn_format_y2k && !warn_format)
- warning ("-Wformat-y2k ignored without -Wformat");
- if (warn_format_extra_args && !warn_format)
- warning ("-Wformat-extra-args ignored without -Wformat");
- if (warn_format_zero_length && !warn_format)
- warning ("-Wformat-zero-length ignored without -Wformat");
- if (warn_format_nonliteral && !warn_format)
- warning ("-Wformat-nonliteral ignored without -Wformat");
- if (warn_format_security && !warn_format)
- warning ("-Wformat-security ignored without -Wformat");
- if (warn_missing_format_attribute && !warn_format)
- warning ("-Wmissing-format-attribute ignored without -Wformat");
+ if (!warn_format)
+ {
+ warning (OPT_Wformat_y2k,
+ "-Wformat-y2k ignored without -Wformat");
+ warning (OPT_Wformat_extra_args,
+ "-Wformat-extra-args ignored without -Wformat");
+ warning (OPT_Wformat_zero_length,
+ "-Wformat-zero-length ignored without -Wformat");
+ warning (OPT_Wformat_nonliteral,
+ "-Wformat-nonliteral ignored without -Wformat");
+ warning (OPT_Wformat_security,
+ "-Wformat-security ignored without -Wformat");
+ }
+
+ /* -Wimplicit-function-declaration is enabled by default for C99. */
+ if (warn_implicit_function_declaration == -1)
+ warn_implicit_function_declaration = flag_isoc99;
+
+ /* C99 requires special handling of complex multiplication and division;
+ -ffast-math and -fcx-limited-range are handled in process_options. */
+ if (flag_isoc99)
+ flag_complex_method = 2;
+
+ /* If we're allowing C++0x constructs, don't warn about C++0x
+ compatibility problems. */
+ if (flag_cpp0x)
+ warn_cxx0x_compat = 0;
if (flag_preprocess_only)
{
}
if (flag_working_directory
- && flag_preprocess_only && ! flag_no_line_commands)
+ && flag_preprocess_only && !flag_no_line_commands)
pp_dir_change (parse_in, get_src_pwd ());
return flag_preprocess_only;
are known. */
cpp_init_iconv (parse_in);
+ if (version_flag)
+ c_common_print_pch_checksum (stderr);
+
if (flag_preprocess_only)
{
finish_options ();
{
unsigned int i;
- /* Enable parser debugging, if requested and we can. If requested
- and we can't, notify the user. */
-#if YYDEBUG != 0
- yydebug = set_yydebug;
-#else
if (set_yydebug)
- warning ("YYDEBUG was not defined at build time, -dy ignored");
-#endif
+ switch (c_language)
+ {
+ case clk_c:
+ warning(0, "The C parser does not support -dy, option ignored");
+ break;
+ case clk_objc:
+ warning(0,
+ "The Objective-C parser does not support -dy, option ignored");
+ break;
+ case clk_cxx:
+ warning(0, "The C++ parser does not support -dy, option ignored");
+ break;
+ case clk_objcxx:
+ warning(0,
+ "The Objective-C++ parser does not support -dy, option ignored");
+ break;
+ default:
+ gcc_unreachable ();
+ }
i = 0;
for (;;)
{
+ /* Start the main input file, if the debug writer wants it. */
+ if (debug_hooks->start_end_main_source_file)
+ (*debug_hooks->start_source_file) (0, this_input_filename);
finish_options ();
pch_init ();
push_file_scope ();
c_parse_file ();
finish_file ();
pop_file_scope ();
-
+ /* And end the main input file, if the debug writer wants it */
+ if (debug_hooks->start_end_main_source_file)
+ (*debug_hooks->end_source_file) (0);
if (++i >= num_in_fnames)
break;
cpp_undef_all (parse_in);
this_input_filename
= cpp_read_main_file (parse_in, in_fnames[i]);
/* If an input file is missing, abandon further compilation.
- cpplib has issued a diagnostic. */
+ cpplib has issued a diagnostic. */
if (!this_input_filename)
break;
}
deps_file = spec;
deps_append = 1;
+ deps_seen = true;
}
}
/* Disable -dD, -dN and -dI if normal output is suppressed. Allow
-dM since at least glibc relies on -M -dM to work. */
+ /* Also, flag_no_output implies flag_no_line_commands, always. */
if (flag_no_output)
{
if (flag_dump_macros != 'M')
flag_dump_macros = 0;
flag_dump_includes = 0;
+ flag_no_line_commands = 1;
}
cpp_opts->unsigned_char = !flag_signed_char;
{
size_t i;
- cpp_change_file (parse_in, LC_RENAME, _("<built-in>"));
+ cb_file_change (parse_in,
+ linemap_add (&line_table, LC_RENAME, 0,
+ _("<built-in>"), 0));
+
cpp_init_builtins (parse_in, flag_hosted);
c_cpp_builtins (parse_in);
their acceptance on the -std= setting. */
cpp_opts->warn_dollars = (cpp_opts->pedantic && !cpp_opts->c99);
- cpp_change_file (parse_in, LC_RENAME, _("<command line>"));
+ cb_file_change (parse_in,
+ linemap_add (&line_table, LC_RENAME, 0,
+ _("<command-line>"), 0));
+
for (i = 0; i < deferred_count; i++)
{
struct deferred_opt *opt = &deferred_opts[i];
{
struct deferred_opt *opt = &deferred_opts[include_cursor++];
- if (! cpp_opts->preprocessed && opt->code == OPT_include
+ if (!cpp_opts->preprocessed && opt->code == OPT_include
&& cpp_push_include (parse_in, opt->arg))
return;
}
/* -Wunused-macros should only warn about macros defined hereafter. */
cpp_opts->warn_unused_macros = warn_unused_macros;
/* Restore the line map from <command line>. */
- if (! cpp_opts->preprocessed)
- cpp_change_file (parse_in, LC_RENAME, main_input_filename);
+ if (!cpp_opts->preprocessed)
+ cpp_change_file (parse_in, LC_RENAME, this_input_filename);
/* Set this here so the client can change the option if it wishes,
and after stacking the main file so we don't trace the main file. */
void
cb_dir_change (cpp_reader * ARG_UNUSED (pfile), const char *dir)
{
- if (! set_src_pwd (dir))
- warning ("too late for # directive to set debug directory");
+ if (!set_src_pwd (dir))
+ warning (0, "too late for # directive to set debug directory");
}
/* Set the C 89 standard (with 1994 amendments if C94, without GNU
flag_iso = iso;
}
+/* Set the C++ 0x working draft "standard" (without GNU extensions if ISO). */
+static void
+set_std_cxx0x (int iso)
+{
+ cpp_set_lang (parse_in, iso ? CLK_CXX0X: CLK_GNUCXX0X);
+ flag_no_gnu_keywords = iso;
+ flag_no_nonansi_builtin = iso;
+ flag_iso = iso;
+ flag_cpp0x = 1;
+}
+
/* Handle setting implicit to ON. */
static void
set_Wimplicit (int on)
{
warn_implicit = on;
warn_implicit_int = on;
- if (on)
- {
- if (mesg_implicit_function_declaration != 2)
- mesg_implicit_function_declaration = 1;
- }
- else
- mesg_implicit_function_declaration = 0;
+ warn_implicit_function_declaration = on;
}
/* Args to -d specify what to dump. Silently ignore
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